Title:

Radiological Criticality Dosimeters Using Nanoparticles Technology in Additive Manufacturing, U.S. Patent No. 11029428

Speaker:

Dr. Luis Benevides

Affiliation:

Director for Radiological Controls Program, Naval Sea Systems Command, US Navy

When:

Thursday, March 10, 2022 at 11:00:00 AM   Add to Calendar

Where:

https://bluejeans.com/814418960/3201 Building

Host:

Nolan Hertel
dbrown360@gatech.edu

Abstract

Traditional criticality passive dosimetry has relied on layers of various elemental materials that have usable neutron activation cross-sections to determine the energy spectroscopy of a neutron field such as a criticality event. If the dosimeters were designed for long-term usage they were typically designed to be encapsulated by some type of envelope. The US Navy’s DT-528/DT was such a dosimeter, first developed in 1968 and distributed throughout the nuclear fleet. After years of use the lifecycle of these dosimeters has come to an end. Today in the advent of additive manufacturing, a new approach can be achieved. Nanoparticles designed and manufactured by various researchers have been used in the electronic, chemical, and medical fields. In this patent, we developed a method in which we used nanoparticles embedded in additive manufacturing to design a new approach to passive dosimetry.

Biography

Dr. Luis Benevides joined the Naval Surface Warfare Center Carderock Division (NSWCCD) in 2016 as a scientist in the Radiation Technology Group and was promoted to the Radiation Safety Officer in 2018. He also holds an adjunct position at Georgetown University as a Radiation Science professor. He worked at the US NRC after having had a distinguished U.S. Navy career retiring as a Captain, Medical Service Corps. He started his military career in the US Army as an enlisted Medical Laboratory Specialist. Soon thereafter, he received his commission as a Surface Warfare Officer in 1987. He transferred to the Medical Service Corps as a Radiation Health Officer culminated in various assignments from 1987-2014. During his Navy career, he held various leadership positions in the disciplines of Radiological Sciences which included health, medical, environmental and industrial health physics. His expertise in personnel dosimetry led to his assignment as the Officer in Charge of the Navy's Naval Dosimetry Center. As the Director for Radiological Controls Program at Naval Sea Systems Command he oversaw over 150 US Navy permits under the Navy's US NRC Master Material License. During this assignment, he also served as the Navy's Fukushima Daiichi Consequence Manager for which he received the Legion of Merit. Dr. Benevides earned his Doctorate degree in Nuclear Engineering Sciences from the University of Florida.